Post Cap Assembly Light Source Mounting

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Solution Overview

Problem

Existing accent lighting systems for decks, docks, patios, and indoor/outdoor spaces face issues such as high costs, difficulty in customization, exposure of light sources, and premature failure due to overheating or environmental factors like water intrusion.

Innovation Solution

The development of an accent lighting system featuring a metal heat dissipating housing with a lens/diffuser structure for a point light source, such as an LED, mounted within a cylindrical or rectangular housing that can be installed on various surfaces, including posts, decks, and stairs, with a design that minimizes visibility and enhances moisture protection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a light source is mounted in an accent lighting system, then illumination is provided for safety and aesthetic purposes, but the light source becomes exposed to environmental factors such as water and heat causing premature failure

Engineering Contradiction:
Improvelight source durabilityVSAvoidenvironmental intrusion
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent implements a nested structure where the light source is housed within a lens assembly, which is in turn mounted within a post cap assembly. This multi-layer nesting provides progressive protection: the lens assembly shields the light source from direct environmental exposure, while the post cap assembly provides an additional protective enclosure that seals against water and heat, thereby extending light source durability without compromising illumination function

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The patent introduces a lens assembly as an intermediary component between the light source and the external environment. This lens assembly serves as a mediator that allows light to pass through while blocking harmful environmental factors such as water and excessive heat from directly contacting the light source, thus protecting the light source while maintaining its illumination function

Inventive Principle:
Principle #24Intermediary (Mediator)

2Illumination intensity

If overhead lighting is used to illuminate indoor/outdoor spaces, then adequate illumination is provided, but light pollution and visual interference increase

Engineering Contradiction:
Improvelighting coverageVSAvoidlight pollution
Core Design Contradiction:
Illumination intensityVSObject-generated harmful factors

Solution Approach 1:

The patent applies local quality by designing the accent lighting system to provide focused, localized illumination at specific areas such as post caps, stair edges, and deck perimeters rather than broad overhead coverage. The light is directed precisely where needed for safety and aesthetic purposes, creating localized zones of illumination that avoid unnecessary light spread and thereby reduce light pollution and visual interference while maintaining adequate lighting coverage

Inventive Principle:
Principle #3Local quality

3Adaptability or versatility

If existing accent lighting solutions are implemented, then illumination is provided, but customization is difficult and costs increase

Engineering Contradiction:
Improvelighting customizationVSAvoidinstallation difficulty
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the accent lighting system into modular components: a standalone lens assembly that can be mounted independently within a post cap assembly, and a light source that can be replaced or repositioned. This segmentation allows for easy customization of lighting characteristics while simplifying installation and maintenance, as individual components can be adjusted or replaced without affecting the entire system

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements universality by designing a post cap assembly that can accommodate various types of light sources and be installed in multiple locations including posts, stair edges, and deck perimeters. The standardized lens assembly and mounting mechanism provide multi-functionality, allowing the same basic assembly to be customized for different applications without increasing overall system complexity

Inventive Principle:
Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution provides customizable, cost-effective, and reliable accent lighting that addresses safety and aesthetic concerns while preventing light pollution, with improved heat management and moisture resistance.

Implementation Method 1

a cylindrical light refracting member having a first end presenting a light emitting surface and a second end

Methodology Applied
Scientific EffectLight refraction: Refraction

Implementation Method 2

a light source having a metal heat dissipating housing

Methodology Applied
Scientific EffectHeat dissipation: Heat Sink

Data Source

PatentUS10197249B2Post cap assembly
Publication Date: 2019.02.05 PRIMESOURCE BUILDING PRODUCTS INC
  • US10197249B2 patent drawing
  • US10197249B2 patent drawing
  • US10197249B2 patent drawing

AI summary

A lighted post cap assembly includes a base member with a generally square shape, a floor, and a plurality of perimeter side walls. The base member is configured to receive an upper end of a post and the floor defines at least four alignment guides and at least four rectangular shaped through holes. Each alignment guide and each rectangular shaped through hole is disposed proximate a respective perimeter side wall. A plurality of light sources are contained within a housing, and each light source is configured to be received by a respective alignment guide at a respective rectangular shaped through hole and oriented downward to illuminate a perimeter of the post. A cover has perimeter side walls and a roof and is secured to the base member such that the plurality of light sources contained between the base member and the cover.